Scale inhibitor for cooling water and preparation method of scale inhibitor

A technology of antiscalant and cooling water, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve corrosion inhibition, antibacterial, rust removal, poor passivation effect, etc. problems, to achieve a good soft water effect

Inactive Publication Date: 2016-05-11
JIANGSU GAIYA ENVIRONMENTAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem to be solved: the scale inhibition rate of the existing scale inhibitors for cooling water needs to be improved, and the effects of corrosion inhibitio

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A scale inhibitor for cooling water, which contains the following components in parts by mass: 1 part of polyacrylic acid, 0.8 parts of hydroxyethylene diphosphonic acid, 1.5 parts of potassium tripolyphosphate, 2 parts of phosphoric acid ester, 50 parts of sodium phosphate, mercapto 0.5 parts of benzothiazole sodium, 0.2 parts of fatty alcohol polyoxyethylene ether, 12 parts of sodium humate, 15 parts of isopropanol pinacol borate, 0.5 parts of calcium acetate, 1 part of urotropine, 6 parts of citric acid .

[0017] A preparation method of scale inhibitor for cooling water, the steps of the preparation method are as follows:

[0018] The first step: uniformly mix polyacrylic acid, hydroxyethylene diphosphonic acid, phosphoric acid ester, fatty alcohol polyoxyethylene ether, isopropanol pinacol borate, urotropine, and citric acid to obtain mixture A;

[0019] Step 2: Mix potassium tripolyphosphate, sodium phosphate, sodium mercaptobenzothiazole, sodium humate, and calc...

Embodiment 2

[0022] A scale inhibitor for cooling water, which contains the following components in parts by mass: 6 parts of polyacrylic acid, 4 parts of hydroxyethylene diphosphonic acid, 7 parts of potassium tripolyphosphate, 8 parts of phosphoric acid ester, 80 parts of sodium phosphate, mercapto 2 parts of benzothiazole sodium, 0.7 parts of fatty alcohol polyoxyethylene ether, 22 parts of sodium humate, 28 parts of isopropanol pinacol borate, 1.2 parts of calcium acetate, 3.5 parts of urotropine, 14 parts of citric acid .

[0023] A preparation method of scale inhibitor for cooling water, the steps of the preparation method are as follows:

[0024] The first step: uniformly mix polyacrylic acid, hydroxyethylene diphosphonic acid, phosphoric acid ester, fatty alcohol polyoxyethylene ether, isopropanol pinacol borate, urotropine, and citric acid to obtain mixture A;

[0025] Step 2: Mix potassium tripolyphosphate, sodium phosphate, sodium mercaptobenzothiazole, sodium humate, and calci...

Embodiment 3

[0028] A scale inhibitor for cooling water, containing the following components in parts by mass: 5 parts of polyacrylic acid, 3.2 parts of hydroxyethylene diphosphonic acid, 5.5 parts of potassium tripolyphosphate, 7 parts of phosphoric acid ester, 70 parts of sodium phosphate, mercapto 1.6 parts of benzothiazole sodium, 0.6 parts of fatty alcohol polyoxyethylene ether, 20 parts of sodium humate, 25 parts of isopropanol pinacol borate, 1.1 parts of calcium acetate, 3 parts of urotropine, 12 parts of citric acid .

[0029] A preparation method of scale inhibitor for cooling water, the steps of the preparation method are as follows:

[0030] The first step: uniformly mix polyacrylic acid, hydroxyethylene diphosphonic acid, phosphoric acid ester, fatty alcohol polyoxyethylene ether, isopropanol pinacol borate, urotropine, and citric acid to obtain mixture A;

[0031] Step 2: Mix potassium tripolyphosphate, sodium phosphate, sodium mercaptobenzothiazole, sodium humate, and calci...

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PUM

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Abstract

The invention relates to a scale inhibitor for cooling water and a preparation method of the scale inhibitor. The scale inhibitor contains the following components in parts by mass: 1-6 parts of polyacrylic acid, 0.8-4 parts of 1-hydroxyethylidene-1,1-diphosphonic acid, 1.5-7 parts of potassium tripolyphosphate, 2-8 parts of phosphate ester, 50-80 parts of sodium phosphate, 0.5-2 parts of sodium 2-mercaptobenzothiazole, 0.2-0.7 part of fatty alcohol-polyoxyethylene ether, 12-22 parts of sodium humate, 15-28 parts of isopropoxyboronic acid pinacol ester, 0.5-1.2 parts of calcium acetate, 1-3.5 parts of urotropine, and 6-14 parts of citric acid. The scale inhibitor provided by the invention has a scale inhibition rate of more than or equal to 98%, and a corrosion inhibition effect of more than or equal to 98%, has good water softening and antibacterial effects, and moreover, has an effect of cleaning rust and passivating metals, thereby being a good scale inhibitor for cooling water.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a scale inhibitor for cooling water and a preparation method thereof. Background technique [0002] Cooling water, also called coolant, means coolant with antifreeze function. The cooling water can prevent the coolant from freezing and bursting the radiator and freezing the engine cylinder block or cover when the vehicle is parked in cold winter. Scale inhibitors are a class of agents that can disperse insoluble inorganic salts in water, prevent or interfere with the precipitation and scaling of insoluble inorganic salts on metal surfaces, and maintain good heat transfer effects on metal equipment. Due to the high demand for the use of cooling water, the demand for scale inhibitors for cooling water is also great. [0003] At present, the scale inhibition rate of existing cooling water scale inhibitors on the market is generally about 95%, and the scale inhibition rate ...

Claims

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Application Information

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IPC IPC(8): C02F5/10C02F5/14
CPCC02F5/145C02F5/105C02F2303/22
Inventor 程功弼仲英豪
Owner JIANGSU GAIYA ENVIRONMENTAL SCI & TECH CO LTD
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